OPERATIONAL PROBLEMS OF WASTE-WATER FILTRATION PLANTS - THEIR ANALYSIS AND POSSIBLE SOLUTIONS

During the last 15 years, mechanical-biological wastewater treatment p lants in Germany have been increasingly supplemented by filtration pla nts. Their technology, which is based on the one used for drinking wat er processing, had to be adapted to the differing circumstances. Compa nies specialised in filtration, as well as engineering offices are pla nning these plants. Workers at wastewater treatment plants had to lear n how to operate the filters. Not all the necessary adaptations went s moothly. A number of operational problems have occurred during the las t few years. Some problems have been analyzed by the Department of Env ironmental Engineering of the Aachen Technical University (ISA), leadi ng to suggestions for avoiding these mistakes in the future. Copyright (C) 1996 IAWQ. Published by Elsevier Science Ltd.